Math Chapter Wise Sets, Relations And Functions English MCQ Rajasthan TGT 2013 Q.If f(x) = 3x + 2 3,x 5x - 3 5 ≠ then A() 1 1 (x), x 19 − = − f f B(fof) (x) = –x C() 1 (x) x − = − f f D() 1 (x) x − = f f Show answer Correct answer: () 1 (x) x − = f f